Your sitch has me stumped and speechless and that never happens lol. On one hand I am not a fan of the I am trying but the passion isn't there line. Usually it's because there is someone else. I think I believe that there is no one else. So the question becomes is he sitting tight going through the motions until OW2 comes around? I guess that is what you need to decide.
So one of the short basic principles I have learned in my readings that has been 100% spot on for me after divorce is "choose a woman who is crazy about you". It makes everything effortless. Something to think about.